There are so many reasons to choose mineral sunscreens over chemical sunscreen filters.
Mineral sunscreens reflect UVA/UVB rays away from the skin, whereas chemical filters work by absorbing the rays into the skin, converting them to heat, and then releasing them from the body.
Mineral sunscreens are gentle and non-irritating to the skin.
Mineral sunscreens lay on top of the skin, and do not penetrate the skin or get into the bloodstream. Recent studies have shown that some chemical sunscreen filters do penetrate the skin and get into the bloodstream.
Proposed sunscreen regulations, The FDA has stated that Zinc Oxide and Titanium Dioxide are the only ingredients that are GRASE (Generally Recognized As Safe and Effective), whereas the 12 remaining chemical sunscreens need additional safety testing done and are not currently considered GRASE.